B Underdevelopment

Underdevelopment is often confused with underexposure. Both scenarios give you weak, or thin, image area but only underdevelopment will result in light edge numbers. To correct this problem ensure that the developer is freshly mixed, not contaminated with other chemicals, is at the right temperature for processing and that you have calculated the right development time (see Figure 48.2).

Fault prevention: Ensure that the developer is fresh and correctly diluted. Check the temperature of the solution before calculating the development time.